Aircraft



FIG. 1 is a top perspective view of an aircraft showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines in the drawings represent portions of the aircraft that form no part of the claimed design. 

CLAIM The ornamental design for an aircraft, as shown and described. 